Cisco QSFP-40G-ER4 Compatible 40GBASE-ER4 and OTU3 QSFP+ 1310nm 40km LC DOM Transceiver Module.This 40GBase-ER4 qsfp plus transceiver is compatible with Cisco 40G devices and is equivalent to a true qsfp-40g-er4. It is programmed and tested to work with Cisco 40 Gigabit Ethernet (GBE) switches and routers. It is designed for 40G Ethernet and high-performance computing network applications. It offers an ideal alternative to oem transceivers at a much lower price.

This qsfp-40g-er4 replacement contains a duplex LC connector for optical interfaces and a 38-pin connector for an electrical interface.
Characteristics
The same function as the Cisco QSFP-40G-ER4
High channel capacity: 40 Gbps per fiber
Up to 40km of links on single-mode fiber
4 CWDM channels 1271, 12911311 and 1331nm
Electric heat plug-in
Compliant with 40G Ethernet IEEE802.3BA and 40GBase-ER4 standards
Support for digital diagnostic monitoring – RoHS compliant

Cisco Compatible QSFP-40G-ER4 Vendor Name Huihongfiber
Form Type QSFP+ Max Data Rate 44.6Gbps
Wavelength 1310nm Max Cable Distance* 40km**
Connector LC duplex Transimitter Type DFB CWDM
Cable Type SMF DDM/DOM Support Yes
CDR Supported Protocols OTN OTU3, 40G Ethernet, Infiniband, Fiber Channel, SATA/SAS3, MSA Compliant
TX Power -2.7~+4.5dBm Receiver Sensitivity <-21.2dBm